Located 60 km north east of the town of Armstrong , Ontario , the Project contains five occurrences, the Tebishogeshik, the Dempster L28, Bird River No.1, the Dempster East, and the Ketchican Road Beryl. The total land package is approximately 2064 hectares.
Tebishogeshik
- Consists of five sub parallel pegmatite lenses ranging from 4.5 m to 18.3 m in width over a length of 845 m.
- In 1956 and 1957, Dempster Exploration Limited mapped, stripped and trenched the main pegmatite units and carried out channel sampling.
- Lens #2 assayed 1.28% Li2O over 9.8 m. Lens 3 was 0.15% Li2O over 4 m, Lens 4 assayed 1.53% Li2O over 7.3 m, 1.64% Li2O over 6.3 m and 1.68% Li2O over 7.9 m.
- Dr. Chris Anderson, Bird River Mines (1982) stated that sampling based on 36 channel samples and 28 host rock geochemical samples from the Zigzag lake property returned the following values; Lithium grades over 1.6% Li2O, Tantalum, 0.5 pounds to 7 pounds per ton, Gallium, approx. 0.5 pounds per ton and recoverable amounts of Beryllium.
- In 2002, Platinova Resources Ltd. re-evaluated the Project for its tantalum potential and channel sampled the pegmatite lenses. Lens #1 assayed 0.168% Ta over 2.54 meters and Lens #4 assayed 0.300% Ta over 0.92 meters.
- Breaks (2003) stated that the majority of the tantalum-oxide minerals in the Crescent Lake pegmatite group are manganotantalite. Individual analysis of manganotantalite from Tebishogeshik Lens 3 exceeded 80 weight % Ta2O5 and were amongst the highest documented in lithium-rich pegmatite of Ontario .
TABLE 1 -- HIGHLIGHTED DRILLING ASSAYS FOR TEBISHOGESHIK SHOWING
As announced March 18, 2011
Canadian Orebodies Drills Widespread Tantalum Mineralization On Zigzag Property
|
Channel # |
From |
To |
Width |
Ta2O5 |
Li2O |
Be |
Cs |
Nb |
Rb |
|
CO-10-005 |
10.73 |
21.10 |
10.37 |
86.92 |
0.27 |
36.07 |
132.40 |
32.65 |
803.35 |
|
Including |
10.73 |
14.48 |
3.75 |
192.79 |
0.45 |
79.05 |
71.93 |
58.91 |
870.93 |
|
CO-10-006 |
19.80 |
22.40 |
2.60 |
123.87 |
0.74 |
115.60 |
54.46 |
81.30 |
1201.54 |
|
CO-10-006 |
28.50 |
30.50 |
2.00 |
170.34 |
0.06 |
100.35 |
80.05 |
100.65 |
940.00 |
|
CO-10-007 |
12.45 |
18.55 |
6.10 |
197.29 |
1.08 |
114.07 |
56.55 |
69.33 |
1090.25 |
|
Including |
12.45 |
15.50 |
3.05 |
240.18 |
1.49 |
146.80 |
39.07 |
82.42 |
580.00 |
|
CO-10-008 |
11.50 |
18.42 |
6.92 |
299.07 |
0.40 |
35.83 |
123.97 |
67.30 |
1434.88 |
|
Including |
15.50 |
18.42 |
2.92 |
399.82 |
0.58 |
62.76 |
118.26 |
87.37 |
1522.74 |
|
CO-10-009 |
10.50 |
18.65 |
8.15 |
188.17 |
0.35 |
140.62 |
51.87 |
69.55 |
1079.26 |
|
CO-10-010 |
34.20 |
37.85 |
3.65 |
237.68 |
0.93 |
96.62 |
64.06 |
105.40 |
1102.19 |
|
CO-10-011 |
14.50 |
18.56 |
4.06 |
106.08 |
0.27 |
194.10 |
64.12 |
84.38 |
1618.28 |
|
CO-10-011 |
39.50 |
41.95 |
2.45 |
223.44 |
0.07 |
126.92 |
248.98 |
46.78 |
859.98 |
Dempster L28
- Found in granite gneiss, 400 m southwest of the west extremity of the Tebishogeshik occurrence.
- Similar mineralogy as Tebishogeshik, contains prismatic spodumene crystals up to 10 cm in length.
- Breaks (2003) identified lithium and columbite-tantalite in the occurrence.
Bird River Potential No. 1
- Dr. Anderson (1975) stated that geochemical sampling of the host rocks adjacent to the lithium rich pegmatite zones showed a dramatic increase in the trace lithium content.
- Geochemical sampling of the greenstone bedrock in the Bird River potential No.1 occurrence showed anomalously high lithium (ca 300 ppm).
Dempster East
- Located in the northeast portion of the property.
- The occurrence is a pegmatite dike, which cuts obliquely across the mafic metavolcanics and has been traced in the southeast direction for approx. 45.7m.
- Six channel samples were cut across the occurrence by Dempster Exploration Ltd. (1956) and they indicated an average grade of 1.88% Li2O.
- Three samples, cut near the southeast end of the occurrence averaged 1.78%Li2O across a width of 4.1 m.
Ketchican Road Beryl
- Pale green beryl was discovered in a 2m wide dike of garnet-biotite-muscovite pegmatic leucogranite near the south side of Ketchican Lake Road.
- Breaks, et al (2006) stated:
- That a muscovite bulk sample revealed anomalous levels of most rareelements; Lithium, Caesium, Tin, Niobium and Tantalum.
- This is a new occurrence beyond the known limits of the other pegmatite groups in the area and therefore, further prospecting within the tonalite-trondhjemite-granodiorite terrain south of the greenstone belt is encouraged as this beryl occurrence could be part of a larger, zoned, rare element pegmatite swarm.
Ultra's property is contiguous to Linear Metals' (TSX-V: LRM) Seymour Lake Lithium project. Linear has recently announced resuming exploration activities on the project where significant lithium mineralization was intersected with grades up to 2.4%. (See Stockwatch, 2009-08-25)
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